Some Performance Numbers for N491LC
On a Fall day in 2006 I took the airplane up to record the following
Weather ---- Clear in early afternoon. Altimeter setting 29.62.
Outside air temperature at 8,000ft ---- 50 deg. F.
Oil temperature throughout this flight ---- 200 deg. F (never above the Vernitherm setting)
During climb-out (full throttle, full rich):
---- 900 FTM at 90 kts. passing through 6,000 ft.
---- Using 16.7 gph at 2390 rpm passing through 7,000 ft.
---- CHT reading 360 - 390 degrees passing thru 7,500 feet at 90kts and 16.7 gph.
Level at 8,000 ft.:
---- Mixture - 20 rpm on the lean side
---- Throttle - Reduced to rated RPM (2,700)
---- Air speed - 165 kts.
---- Fuel flow - 12.6 gph.
---- CHT 350 - 380, EGT 1530 nominal.
---- Ground speed: East - 185kts. West - 145kts.
Cruise set-up at 8,000 ft:
---- Tach set to 2390 RPM, leaned on the lean side.
---- Fuel flow - 10 gph. (RPM set to achieve this figure)
---- EGT - 1470 nominal
---- CHT - 320 to 355
---- Airspeed 140 kts. against 20kt. headwind.